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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 661 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.46 × 5 =
  2. 2.77 × 50 =
  3. 3.98 × 5 =
  4. 4.44 × 50 =
  5. 5.27 × 5 =
  6. 6.52 × 50 =
  7. 7.37 × 50 =
  8. 8.41 × 5 =
  9. 9.62 × 5 =
  10. 10.12 × 5 =
  11. 11.38 × 50 =
  12. 12.29 × 50 =
  13. 13.38 × 50 =
  14. 14.72 × 5 =
  15. 15.34 × 50 =
  16. 16.74 × 50 =
  17. 17.69 × 5 =
  18. 18.84 × 50 =
  19. 19.21 × 50 =
  20. 20.69 × 5 =
  21. 21.23 × 50 =
  22. 22.38 × 5 =
  23. 23.70 × 5 =
  24. 24.75 × 50 =
  25. 25.43 × 5 =
  26. 26.68 × 50 =
  27. 27.41 × 50 =
  28. 28.20 × 50 =
  29. 29.50 × 5 =
  30. 30.43 × 5 =
  31. 31.73 × 5 =
  32. 32.40 × 5 =
  33. 33.50 × 50 =
  34. 34.51 × 50 =
  35. 35.69 × 5 =
  36. 36.61 × 50 =
  37. 37.12 × 5 =
  38. 38.36 × 50 =
  39. 39.55 × 5 =
  40. 40.94 × 50 =

Answer key

  1. 230
  2. 3850
  3. 490
  4. 2200
  5. 135
  6. 2600
  7. 1850
  8. 205
  9. 310
  10. 60
  11. 1900
  12. 1450
  13. 1900
  14. 360
  15. 1700
  16. 3700
  17. 345
  18. 4200
  19. 1050
  20. 345
  21. 1150
  22. 190
  23. 350
  24. 3750
  25. 215
  26. 3400
  27. 2050
  28. 1000
  29. 250
  30. 215
  31. 365
  32. 200
  33. 2500
  34. 2550
  35. 345
  36. 3050
  37. 60
  38. 1800
  39. 275
  40. 4700

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